arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0806.4219hep-lat
收藏

SU中的中心涡旋和夸克传播子(2)规范理论

Center vortices and the quark propagator in SU(2) gauge theory

Patrick O. Bowman, Kurt Langfeld, Derek B. Leinweber, Alan O' Cais, Andre Sternbeck, Lorenz von Smekal, Anthony G. Williams

摘要:

本文研究了中心涡旋去除后,猝灭SU(2)规范位形上朗道规范中AsqTad夸克传播子的行为。与最近SU(3)中的结果相反,我们清楚地看到,如果去掉中心涡旋,质量函数的红外增强消失了,这是SU(2)规范场理论中中心涡旋与手征对称性破缺之间密切关系的一个标志。这些结果为解释SU(3)结果提供了一个基准。此外,我们考虑涡流的配置。在这些情况下,夸克修饰函数的行为与全组态大致相同,而质量函数几乎与动量成线性关系。

英文摘要:

We study the behavior of the AsqTad quark propagator in Landau gauge on quenched SU(2) gauge configurations under the removal of center vortices. In contrast to recent results in SU(3), we clearly see the infrared enhancement of the mass function disappear if center vortices are removed, a sign of the intimate relation between center vortices and chiral symmetry breaking in SU(2) gauge-field theory. These results provide a benchmark with which to interpret the SU(3) results. In addition, we consider vortex-only configurations. On those, the quark dressing function behaves roughly as on the full configurations, and the mass function picks up an almost linear momentum dependence.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑